Alien life likely exists, we just may not have been looking in the right forms. That announcement was made Thursday by NASA.

Scientists say they have always thought phosphorous was found in every living thing, but for the last two years they have been studying near Yosemite National Park. They found a type of bacteria that thrives by replacing phosphorous with the toxic chemical arsenic.

"We still don't know what might make a habitable environment on another planet or a satellite of another planet . We have to increasingly broaden our perspective," Pam Conrad of NASA said

Scientists say this is a huge development and will change the way we look for life. It could even mean new missions to Titan, the largest moon of Saturn which is known for having traces of arsenic.

this is really amazing, isn't it?

Quick Notice: NASA has many iPhone apps.

1. The Space Weather Media Viewer features near real-time imagery from a wide variety of NASA missions, as well as video interviews with prominent scientists about the causes of space phenomena and NASA-created visualizations.

A major solar flare erupts on the sun. Before long, your phone chirps in your pocket to let you know! Pulling out your phone, you see a 3D view of the sun — a digital reconstruction of satellite images freshly downloaded from NASA's "STEREO" satellites.

3. Lunar Electric Rover Simulator App for iPhone

You don’t need a driver’s license, but you still need to buckle up as the Simulator gives you a glimpse of what it might be like to support the activities of a functioning Lunar Outpost.

4. NASA App for iPhone

The NASA App collects, customizes and delivers an extensive selection of dynamically updated information, images and videos from various online NASA sources in a convenient mobile package on your iPhone.

5. NASA Images for iPhone

With this app you can access the entire NASAImages.org library from your iPhone along with the metadata for each image, video, and animation.

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